#include <stdio.h>

int main(int argc,char *argv[])
{
	int a = 1,b = 5,c = 10,d;
	d = (a = a + b,c = b + c,a + c);
	printf("d = %d\n",d);//d=21 对
	//d=(6,15,21)错
	
	return 0;
}